Appliance for opening or shutting windows.



'PATENTEDSEPT. 20, 1904 Y K. RDDELSTAB. APPLIANCE FOR OPENING 0RSHUTTING WINDOWS.

N0 MODEL. APPLIOATION FILED MAY 12, 1904.

UNITED STATES Patented September 20, 1904.

PATENT EEToE.

KARL RODELSTAB, OF BRUCHSAL, GERMANY.

SPECIFICATION forming part of Letters Patent No. 770,315, datedSeptember 20, 1904,

Application filed May 12, 1904. Serial No. 207,596. (No model.)

To all whom it may concern.-

Be it known that I, KARL RoDELsTAB, master locksmith, a citizen of theGerman Empire, residing at the town of Bruchsal, in the Grand Duchy ofBaden, Germany, have invented a new and useful Improvement in Appliancesfor Opening and Shutting WVindows, entitled Adjusting-Lever Appliancefor Skylight-VVindows, of which the following is a specification.

The subject of the present invention is an adjusting-lever andassociated contrivances for the opening and shutting of a skylightwindowand to hold such window securely fixed in an intermediate position, soas to prevent any projection of said lever into the apartment which islighted by such window. With the contrivances worked by anadjusting-lever for the operating and fixing of skylight-windowshitherto in use there is always the unpleasantness that theadjusting-lever working the draw-rod either sticks out laterally orprojects into the apartment with any fixed position of the window,andparticularly with the intermediate position. This need no longer betolerated as a necessary evil, for the present invention obviates it.Therein at every fixed position the adjusting-lever sits inconspicuouslyupward or downward.

In the accompanying drawings my adjusting-lever appliance is representedin eight figures.

Figure 1 gives a perspective view of the adjusting-lever withswiveled-on draw-rod and fixing-plate when the window is closed. Lowerportions only are given of the drawrod d and the frame 6. Figs. 2 and 3are respectively cross-sections along the lines A B and C D of Fig. 1.Fig. 4 exhibits the first position into which the adjusting-lever ismoved to secure an intermediate fixing of the window; Fig. 5, the secondposition thus occupied by the adjusting-lever for such purposes; Fig. 6,the third and last position so occupied by the adjusting-lever. Fig. 7shows the position of the adjusting-lever when the window is opened toits utmost extent; and Fig. 8 gives a perspective view of askylightwindow with the adjusting-lever appliance in an open position.

it moves the draw-rod (Z, which sets the skylight-window in motion.

The fixing-plate a is attached to the frame 'bin the position abovementioned by a shoulder a", bent at right angles and having screwholes.Vith the fixed pivot a forming its center a slot 9, resembling incontour a halfcircle, is cut in the fixing-plate a. At the inner middleof such slot a subsidiary lateral slot 9 is out. This smaller slot 9serves as a catch or stop for the pivot 0', attached to theadjusting'lever c and working in the combined slots 9 and g. Theadjusting-lever chas also a combination slot 0 c of similar width,throughout. 'Thelarger slot 0 forms a quarter-circle, with the pivot 0for its center. The smaller slot 0 branches ofl' radially in thedirection of the length of the lever. The inner end of this latter slottakes the pivot a of the fixing-plate a when the pivot c of theadjusting-lever is working in the semicircular slot 9. At the hindersideof the fixing-plate a a draw-rod (Z for moving the window isswiveled on the pivot 0 of the adjusting-lever c. Weakening of theleverage through loosening or falling out of the pivot 64 is preventedby tightening up and steadying the latter with a collar 7L andholding-pin a.

The position of the adjusting-lever in Fig. 1 corresponds with theclosed window and in Fig. 7 with the open window. To insure anintermediate fixing of the window, the subsidiary lateral slot g isnecessary in the fixing-plate a, Fig. 1, whereinto with an intermediateposition of the adjusting-lever the pivot 0' can be pushed; but to makepossible such a placing of the pivot c it is essential that the radialslot 0 shall be in thelever itself. To insure that in no fixed positionthe adjusting-lever shall have an outward direction, so for thesearrestations of the draw-rod d, or of the window itself, correspondingwith the downward movement ofthe adjusting-lever, this last must as wellbe provided with a l ing skylight-windows, the combination of an 5 slot0 Such slot thus has a width of the thickness of the pivot a and acontour of a quarter-circle, having for its center the fixed pivot c inthe slots 9 9. After the adjusting-lever has been brought into theposition which corresponds with an intermediate fixing of the windowshown in Fig. 5 the lever can be immediately turned downward, insuringsuch intermediate fixing, and that the ad justing-lever no longerprojects outward.

What I claim as my invention, and desire to secure by Letters Patent,is-

In an adjusting-lever appliance for operatadjusting-lever 0, having afixed pivot 0 whereon a draw-rod cl is swiveled, and a combined slot 0 0with afixing-plate 64 having a fixed pivot a, a shoulder at right anglesa", and a combined slot 9 g, all substantially as set forth.

In testimony whereof I have signed myname to this specification in thepresence of two subscribing witnesses.

KARL RODELSTAB. Witnesses:

H. W. HARRIS, JOSEPH H. SEUTE.

